63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "cbase.h"
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#include "proxyentity.h"
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#include "materialsystem/imaterial.h"
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#include "materialsystem/imaterialvar.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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// $sineVar : name of variable that controls the alpha level (float)
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class CAlphaMaterialProxy : public CEntityMaterialProxy
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{
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public:
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CAlphaMaterialProxy();
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virtual ~CAlphaMaterialProxy();
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virtual bool Init( IMaterial *pMaterial, KeyValues *pKeyValues );
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virtual void OnBind( C_BaseEntity *pEntity );
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virtual IMaterial *GetMaterial();
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private:
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IMaterialVar *m_AlphaVar;
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};
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CAlphaMaterialProxy::CAlphaMaterialProxy()
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{
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m_AlphaVar = NULL;
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}
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CAlphaMaterialProxy::~CAlphaMaterialProxy()
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{
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}
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bool CAlphaMaterialProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
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{
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bool foundVar;
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m_AlphaVar = pMaterial->FindVar( "$alpha", &foundVar, false );
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return foundVar;
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}
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void CAlphaMaterialProxy::OnBind( C_BaseEntity *pEnt )
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{
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if (m_AlphaVar)
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{
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m_AlphaVar->SetFloatValue( pEnt->m_clrRender->a );
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}
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}
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IMaterial *CAlphaMaterialProxy::GetMaterial()
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{
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if ( !m_AlphaVar )
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return NULL;
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return m_AlphaVar->GetOwningMaterial();
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}
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EXPOSE_INTERFACE( CAlphaMaterialProxy, IMaterialProxy, "Alpha" IMATERIAL_PROXY_INTERFACE_VERSION );
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